Password Folder on NAS

Here is an easy one.  I am using Media Player.  Can I password protect a folder on a NAS USB to Extreme Router so the kids and guests can’t access it.  It’s OK for the ATV Black to have fulltime access to other media folders but I wan’t to control access to the content on one folder.

 

Thanks

 

Apple TV software 4.2.2 (2203)

SeasOnPass 0.7.6 was used to make the original jailbreak

Beta 6 was used

MacOSX 10.6.8 MacBook Pro

Extreme Wire Router with 3 TB WD External HD USB to router

TTT